Her food clothing and shelter is all the rights she has over him. Not a 10k re decoration every few years. Nor constant useless expenses. The prophets 9 houses were often empty and didnt have much more than dates and water to eat. Marriage is firstly about curbing zina and secondly for procreation.You have to be able to afford it. It is haraam for a man to marry multiple women it he cannot afford it.
One of the rights your wives have over you is that you can provide.
Islamically if a man cannot provide and is too poor he has to fast.
But yes, marriage is barakah and Allah will bless you with additional wealth. That however does not mean you should marry when you have nothing.